Here is are latest video on the 4-2-3-1, which entails a few basic ideas on the formation.
In this video you will see the defensive shape to the attacking team shape of this formation. Please feel free to comment and provide feedback.
http://www.youtube.com/watch?v=Y4MPqzpv1WA&feature=youtu.be
Enjoy
Coach Wanye
Soccer Awareness 